结合NSCT变换和引导滤波的多光谱图像全色锐化算法

徐欣钰, 李小军, 盖钧飞, 李轶鲲

A multispectral image pansharpening algorithm based on nonsubsampled contourlet transform (NSCT) combined with a guided filter

XU Xinyu, LI Xiaojun, GE Junfei, LI Yikun

表2 GF-2图像客观评价指标计算结果

Tab.2 Calculation results of objective evaluation indexes of GF-2 image

方法 全分辨率评价 降分辨率评价 Dλ Ds QNR Q4 SAM ERGAS UIQI CC 本文算法 0.034 2 0.062 7 0.905 2 0.802 5 3.855 1 4.230 8 0.798 2 0.868 9 GSA 0.123 3 0.355 7 0.564 9 0.753 6 5.221 9 5.804 6 0.698 9 0.807 7 HPF 0.070 5 0.153 2 0.787 1 0.798 3 3.965 5 4.491 9 0.781 3 0.852 0 SFIM 0.066 7 0.161 4 0.782 7 0.795 2 4.021 1 4.588 0 0.773 3 0.848 4 Indusion 0.041 5 0.112 8 0.850 4 0.655 0 4.326 7 5.957 6 0.626 5 0.734 3 MTF-GLP-HPM-PP 0.119 6 0.267 6 0.644 8 0.798 3 4.523 9 4.661 7 0.764 4 0.848 3 MTF-GLP-CBD 0.061 4 0.183 2 0.766 6 0.781 6 4.861 3 5.265 3 0.739 0 0.831 8